Laminated lock



Oct. 15, 1946. M. FALK 2,409,424

- LAMINATED LOCK Filed Sept. 27. 1944 2 Sheets-Sheet 2 INVENTOR %M4MMATTORNEY Patented Oct. 15, 1946 UNITED STATES PATENT OFFICE I LAMINATEDLOCK Morris Falk, Leominster, Mass, assignor to Independent LockCompany, Fitchhurg, Mass, a corporation of Massachusetts ApplicationSeptember 27, 1944, Serial No. 555,915

15 Claims.

through aligned openings in each, of the plates,

with the plates provided with round holes to form wells to receive theshackle branches, and with some of the plates cut out to form part of,and to accommodate the locking mechanism for the shackle.

Known to me in this field of laminated locks is the loose assembly ofthe plates, with one plate or shackle keeper plate formed with a largershackle receiving hole which admits of sufficient movement of thisparticular laminationto create a clear passage for the shackle branch orpost which, after insertion into the loosely stacked laminations,permits of a sliding movement of this lamination, to bring it inalignment with the other laminations. This keeper plate, so-tospeak, hasa shackle hole with a straight wall for engaging a shoulder portion ofthe shackle branch or post. After insertion of the shackle in the wellsformed by the holes in the stacked plates, the keeper plate is slid toproject the straight walled portion beyond the circular wall of the wellformed by a plurality of the other laminations and to align all of theplates with their rivet holes in alignment, whereupon the rivets areinserted in therivet perforations,'and the ends thereof headed tocompletethe lock casmg. l i

1 This form of look while effective in conjunction with someshackle-latching mechanism, or more particularly, with a shackle whichis keyed in the casing only at the heel or anchoring post, has

not presented substantial manufacturing or as-- sembling problems wherethe efiectiveness of the padlock is not too critical and a rather crudelock mechanism is provided in the lock assembly.

I have found deficiencies in laminated locks of the character heretoforedescribed which lead to considerable economic waste of material andlabor. nized necessity to make locks pick proof with the minimum amountof clearances between the operating parts, especially the shackle andthe locking mechanismgof a magnitude not achieved by the earlierlaminated locks; This problem is This has been occasioned by the recog-F magnified as greater security of locking action is sought'by a toe andheel locking of the shackle in respect of the casing, as distinguishedfrom cruder forms-of laminated locks where merely a heel locking of theshackle is effected.

Improvement of the laminated lock for purposes of security, to effectthe minimum amount of clearances, or broadly to effect a toe and heellocking action of the shackle to the casing, has created problems in theendeavor to form aclose fit between the locking mechanism and theshackle, particularly in respect to boththe to and heel of the shackle.The production of earlier types of laminated locks has not accomplisheda workmanlike product and has resulted in loss by reason of rejects andthe expenditure of unnecessarylabor in interfitting the padlock Darts.

Accordingly, it is an object of my invention to provide a laminated lockwhich efiects substantial economies, while achieving durability and thetamper-proof requirements of a lock of this character.

More particularly, it is an object of my in-- vention to provide anarrangement of the plates of the laminated lock to form a casing, inassociation with which the shackle member may be assembled, in a way tointerfit or test out the locking mechanism carried by the casing inrespect of the shackle to assure that proper operation will be securedin the merchandizable article, and thereby minimize rejects heretoforeexperienced in a lock of this character.

Still further, it is an object of my invention to provide a laminatedlock whereby temporary connection between the shackle and casing may besecured to permit inspection of the "operation of the locking mechanismof the casing, discover defects; if any, and cure the same beforepermanently assembling the laminations or plates forming the casing, andwhich will thus preliminarily disclose any defects, while the casingcontaining the lock mechanism is sufliciently'rigidly assembled tomanipulate the locking elements and to thereafter permit disengagementof the shackle from the casin to cure any detectable defects in thelockingmechanism, before permanently uniting the laminations or platesconstituting the casing in association with the shackle;

Still further, it is an object of my invention to provide casing partsof a padlock formed of laminated plates which will permit or facileassembly of the shackle and casing and permit testing of the lock partsand a removal of he shackle from the assembly, to effect properinterfitting, if necessary, and still more particularly, to provide alaminated lock which satisfies the close working or tolerancerequirements of a toe and heel locking of the shackle of a padlock ofthis character, by an assembly method which effects substantialeconomies in production.

Broadly stated, it is an object of my invention to provide an assemblyof plates forming the laminations of a laminated padlock or the like toan intermediate assembled stage where inspection of the lockingmechanism may be made, and defects cured, without the waste heretoforeexperienced in making laminated padlocks.

To attain these objects and such further objects as may appear herein orbe hereinafter pointed out, I make reference to the accompanyingdrawings, forming a part hereof, in which Figure 1 is a longitudinalsectional view of a laminated padlock taken on line of Figure 2;

Figure 2 is a section taken on line 2-2 of Figure 1;

Figure 3 is a view similar to Figure 2 with the bolt of the lockingmechanism moved and the shackle released to the unlocked position;

Figure 4 is a section taken on line i l of Figure 1;

Figure 5 is a section taken on line 5-5 of Figure 1;

Figure 6 is a section taken on line 6-6 of Figure l;

Figure '7 is a fragmentary longitudinal sectional view of the lock andshackle with the casing at an intermediate stage of assembly to receivethe shackle;

Figure 8 is a section taken on line 8-8 of Figure '1;

Figure 9 is a fragmentary longitudinal sectional view showing the casingmodified to shackleengaging position;

Figure 10 is a section taken on line lll-lfi of Figure 9;

Figure 11 is a plan view of the top plate;

Figure 12 is a plan View of the second plate from the top exemplifyingthe shackle keeper plate;

Figure 13 is a plan view of plates 3 and ti from the top exemplifyingthe bolt housing plates;

Figure 14 is a plan view of the fifth plate from the top exemplifyingthe bearing plate for the key barrel and pin cylinder housing;

Figure 15 is a plan View of the sixth and seventh plates from the topexemplifying the clearance plate for the key barrel casing; I

Figure 16 is a plan view of the eighth to the sixteenth plates to thetop exemplifying the plates for the pin cylinder housing; and

Figure 17 is a plan View of the bottom plate.

Making reference to the drawings, I have illustrated a padlock it,having a casing H, and a shackle l2. The casing H is made of a pluralityof laminated plates, details whereof are more specifically shown inFigures 11 to 17.

In assembling the casing I first make reference to the bottom plate l3(Figure 17) which is formed with a central pin cylinder bearing orificel and round rivet-receiving holes H: at each corner.

In accordance with the embodiment of the invention illustrated, I thenoverlay nine plates N5, of the configuration shown in Figure 16, each ofwhich is formed with round rivet-receiving holes I5, aligned with theholes iii in plate |3 shown in Figure 17. Each of the plates i6 isinteriorly formed with a central cut-out H a Part of which is generallycircular and merges in one direction into a shackle heel-receivingorifice I8 by a cut-out slit I9, and at its leftmost direction into asubstantially circular shackle toe-receiving orifice 2!! by a slottedportion 20a. The configuration of the cut-outs I1 and 2% and 20a isarranged to receive a pin cylinder barrel housing 2| whose flange 22fits within the orifice M of the bottom plate i3. The configuration ofthe slotted portion 28a is arranged to receive the extension 23retaining the tumbler pins 2 Within the pin cylinder barrel housing 2|,the key barrel 25 is located, in a manner which will be readilyunderstood.

Superimposed on the nine plates l5, stacked as previously described,there are positioned two plates 2.5 (Figure 15), each having foursubstantially round rivet-receiving orifices |5, a shackleheel-receiving orifice |3 and a central cut-out ll merging into aslotted portion 20a for receiving the pin cylinder barrel housing 2| andits extension 23. The plates 26 are formed at their interior with anoff-set cut-out Zl to receive the lock washer 28 and its finger 2% whichholds the key barrel 25 rotatably located Within the pin cylinderhousing 2| at its upper end, the finger 29 limiting the movement of thebarrel in one direction.

Superimposed upon the plates 26 there is positioned a plate 31] (Figure14) having four round rivet-receiving orifices l5, circular heel and toeshackle receiving orifices l8 and 20, and a central circular cut-out 3|.Through the circular cutout 3| the finger 32 projects. The finger 32 isof general cylindrical contour, forming a bearing for purposes whichwill appear more clearly as this description proceeds.

Within the cut-out 3| there is nested a disk 33 having a crescent-shapedopening 34 mounted upon the crescent-shaped shoulder 35 of the finger32. The disk 33 carries an eccentrically positioned finger 36, whoseoperation will be described in greater detail as this descriptionproceeds. The plate 3|] serves as a retainer for the pin cylinderhousing 2| and its extension 23.

Superimposed upon the plate 30, I position a pair of plates 31 (Figure13). These plates each are formed with substantially roundedrivet-receiving orifices [5 to be aligned with the orifices l5 of theplates shown in Figures 14 to 17 previously described. The plates 3'!include a cut-out defining the substantially circular heel and toeshackle-receiving orifices l8 and 20. The interior of the plates 31 iscut out to provide a chamber for the swinging bolt 38 and this member isformed with an orifice 33 to receive the finger 32 previously mentioned.For rotation of the swinging bolt on the finger 32 the swinging bolt hasone finger "All arranged to extend in the well formed by the plateswhich outline the orifice 20 and a finger 4| arranged to swing withinthe well formed by the plates which outline the orifice Hi. The swingingbolt has a cut-out defining a shoulder 42 engaged by the eccentricfinger 3B in one direction. A lug 43 is engaged by a coiled spring 44and abuts a shoulder 45 formed on the interior of the plate 31, normallytending to swing the bolt 38 .to align the fingers All and 4| in thewell formed by the orifices l8 and 20, previously described.

Thereupon I superimpose on the stacked plates a keeper plate 46 shown inFigure 12. Keeper plate 46 is provided with two diametrically opposedcircular rivet-receiving orifices l5 corresponding in position to theupper right hand corner and lower left hand corner rivet-receivingorifices 15 of the plates described and stacked below the same inconnection with Figures 13 to 1'7. Diametrically opposed rivet-receivingorifices 41, 41 are elongated laterally with the limiting edges 48, 48positioned to be aligned with the leftmost wall of the upper left handcorner and lower right hand corner orifices l 5 with a limit of movementin the right hand direction and with the limiting edges 49, 49 formovement for a distance which will appear more clearly as thisdescription proceeds. The orifice 59 in this plate is elongate. insteadof circular, as inthepreviouslydescribed plates. The walls 5| definingthe orifice 50 permit of a movement in parallelism with that permittedby elongated orifices 41, 41. The right hand end of the plate 45 has anorifice 52 formed with a semi-circular wall 53 in the right handdirection and with a straight Wall 54 in the left hand direction.Orifices 41, 41 and 52 are elongated to substantially the same degree sothat when the plate 45 is moved towards the left hand, the semicircularwall 53 will be aligned with the well formed by the right hand wall ofthe orifice I8 in the stacked plates immediately below plate 46. Thestraight wall 54 will thereupon be clear of the well formed by thecircular orifice [8 in the plates illustrated in Figures 14, and 16.Likewise, the orifice 50, when moved in a left hand direction will notconstrict the well formed by the orifice in the plates illustrated inFigures 13 to 16 when stacked as described.

In this position of stacking of the plates as described, I thensuperimpose the top plate 55 which has four circular cornerrivet-receiving orifices l5 aligned with the orifices I5 and the platesillustrated in Figures 13 to 17, and circular heel and toeshackle-receiving orifices I 8 and 20, respectively.

Through the stacked plates thus described, there are then inserted rivetpins 56 and 51 which pass through the aligned orifices located inposition corresponding to the orifices 41, 41 of the plate 46, i. e. theupper left hand corner and lower right hand corner. The rivet pins 55and 5'! are then headed at their opposite ends to rigidly bind togetherthe assembly of plates and the locking mechanism, at the same timepositioning the plate 46 to the point where the limiting edge 49, 49engage the right hand side of the rivet. pins 55, 51.

In this position, as more clearly shown in Figure 8, the straight wall54 forms no obstruction to the well formed by the stacked plate 55 andthe plates illustrated in Figures 13 to 16.

In this position the key K is rotated counterclockwise (as viewed inFigures 3 and 8) to swing the fingers 40 and 4! of the swinging bolt 38to the open position more clearly shown in Figure 3, whereupon a coiledelector spring 58 is inserted in the well 59 which corresponds to theorifice l9 in each of the plates shown in Figures 11 and 13 to 16.

At this stage, the casing H has been partially completed and the plate46 is located to have the edge 60 protrude beyond the edge wall 6|formed by all of the plates shownin Figures 11 and 13 to 17, as willappear more clearly from an inspection of Figures '7 and 8.

The shackle I2 is formed with a toe portion or branch 62 which isgenerally circular in cross section to make a close sliding fit with thewell 53 outlined by the circular opening 29 in each of the platesillustrated in Figures 11 and 13 to 16. A recess 64, formed in the toeportion 62 has a shoulder 65 spaced at a point to receive the finger 40of the swinging bolt 38.

The shackle I2 has an anchoring post or heel BE formed with a pivotingportion 61 Which is generally cylindrical to conform snugly to the well59.

Spaced from the end of the pivoting portion 61 I provide an annulargroove 68 which provides a neck portion 69 generally circular in crosssection (see Figure 10), leaving a shoulder 10 on one side of the neck.The inner portion of the anchoring post or heel 66 is flattened at H andterminates adjacent a recess I2,- forming an inwardly stepped shoulder13. The shoulders 13 and 55 are formed to lie substantially in the sameplane.

With the shackle bolt constructed as described, and with the casingprepared as previously described, and more particularly in the positionas illustrated in Figure 7, I thereupon insert the pivoting portion 51of the shackle Within the well 59 and, upon swinging of the bolt 53,entrance of the portion 6'! within the well 59 is permitted to the pointwhere the coiled ejector spring 58 is encountered. The toe portion 62will thereupon likewise enter the well 63. Release of the key K willthereupon serve to swing the fingers 48 and 4| to engage the recesses64, and 1'2, respectively, and prevent ejection of the shackle I2.

In this position the plate 46 is moved to bodily align the rivetreceivin holes 5 with the orifices l5 in the upper right hand corner andthe lower left hand corner of the other plates constituting theremainder of the casing i, to permit completion of the lock casing. Thiswill result in bringing the limiting edges 48, 48 to engage the leftside of the rivet pins 55 and 51 as more clearly shown in Figures 9 and10. This may be done in several ways.

A tool or pin approximately the size of the rivet pin and pointed at oneend may have the pointed end inserted into the oval-shaped openingformed by the orifices i5 in the top plate 55, and the orifices H5 inthe plate 46. This will result in a sliding movement of the plate 45, tobring the straight wall 54 into position Where it projects into the well'55, to protrude over the shoulder 19.

Another method for accomplishing the alignment of the rivet orifices l5with the orifices l5 and to project the straight wall 54 into shackleengaging position, is by inserting an L-shaped tool into the well 53 tomove the plate from the position shown in Figures '7 and 8 to theposition shown in Figures 9 and 10.

A still further method in the event that it is elected to head therivets 56 and 5'! more positively, is by giving the plate 46 a hammerblow at the edge 55, whereby the edge 59 is brought into alignment withthe edge 6| of the lock casmg.

The straight Wall 54 projects into the well 59 to engage the shoulder(ii of the anchor post 66 of the shackle. Thus, the intermediateassembly of the lock has been completed. The assembler may thereupontest out the lock mechanism, to ascertain whether the swinging boltoperates properly to bring the fingers 45 and t! into engagement withthe shoulders and E3 of the recesses 54 and i2, respectively. Otherdetails of the proper operation of the lock may at this time be testedout so that any defects, especially thosevvhich may occur as a. resultof the tempering or hardening treatment to which the shackle l2 has beenexposed, may be detected. Should the locking mechanism be found to bede- "7 fective or not smooth in operation, the plate 46 may thereupon heslid back bodily to the position shown in Figures 7 and 8, whereupon, bykey operation of the swinging bolt 38, the shackle I2 may be removed foralteration, modification, or replacement by a more properly fittingshackle and for otherwise making any other adjustment which may benecessary.

Should the shackle be found to operate properly in the shackle-receivingwells 63 and 59, and to properly interfit the shoulders 65 and ill withthe fingers Ail and ll of the swinging bolt 38, the final rivet pins Mand 15 may be driven into position entering the circular orifices l5, l5of the plate it and the orifices I5 in this location of the otherplates, and after heading the rivet pins 14 and i5, the casing assemblyand lock are completed and permanently clamped to prevent any movementof the plate 46.

While I have described by my procedure of assembly initially insertingand heading two of the rivet pins 56 and 51, in order to permit theplate 46 to be slid into shackle-locking position, and to permitretracting of the plate is by bodily sliding the same, I may, as analternative procedure, after bodily sliding the plate intoshackle-engaging position, insert the final clamping rivet pins 14 andi5 and head these members to complete and permanently clamp the platestogether and inspect the operation of the look.

In this condition the completed lock may be tested out as previouslydescribed in order to detect any defects. Should any difficulties bedetected, only rivets I l and 15 need be removed to permit the plate 46to be bodily slid, to displace the straight wall M from its projectingposition into the Well 59. Some instrumentality may be used to move theplate 56 to the position shown in Figures '7 and 8, thereby permittingremoval of the shackle if: for adjustment and replacement whileotherwise retaining the assembly of plates clamped together by theremaining two rivet pins as and 51. Either procedure, it will be noted,will minimize the labor heretofore found necessary in making anyadjustments in the look assembly after the shackle has been attached tothe casing. The method of assembly and the construction provided therebyeffect considerable economies in lock production, particularly in a lockof the preferred form herein illustrated wherein both atoe and heelshackle engagement of the swinging bolt fingers is effected.

Another feature of the method of assembly described, especially underconditions where either the rivet pins 14 and F5 are withheld from theassembly or are removed from the assembly for testing of the lock parts,resides in the ability to return the plate 46 from the shackle-engagingposition shown in Figures 9 and 10 to the shackle dis-engaging positionshown in Figures '7 and 8. This movement may be accomplished with easeas previously described, by applying pressure to the plate 46 at itsright hand edge as viewed in Figures 9 and 10, using someinstrumentality such as a screw driver. I may, however, depress theshackle to the point where the edge 16 just clears the upper surface ofplate 55. This action brings the flattened edge H in line with thestraight wall 54 of the plate 46. Rotation counter-clockwise of theshackle l2 in this position serves to cam the plate 46 slidably toretract the wall 54 from its position overhanging into the well 59, to apoint where the wall 54 is in alignment with the lefthand wall of thewell 59, projecting the plate 46 to the initial position of assemblyshown in Figures '7 and 8. The shackle bolt l2 may thereupon be removedfor adjustment or replacement as previously described. Thus, at theintermediate stage of assembly, elimination of the final rivet pins 14and i5, and especially the elimination of the rivet pin heads in thelocalities in which the rivet pin 15 is to be positioned, provides asimple and expedient manner for restoring the plate M3 to the positionwhere the shackle bolt is released for removal and replacement.

Having thus described my invention and illustrated its use, what I claimas new and desire to secure by Letters Patent, is:

1. A lock comprising a casing formed of a plurality of superimposedplates and including orifices through some of the plates providing wellsfor receiving a shackle, and locking means in said casing for saidshackle, a keying plate to engage one branch of said shackle, rivetholes through said plates, said keying plate having a rivet pinreceiving orifice formed to permit bodily movement of said plate to andfrom shackle engaging position when a rivet pin unites said laminationsand keying plate together.

2. A lock comprising a casing formed of a plurality of superimposedplates and including orifices through some of the plates providing wellsfor receiving a shackle, and locking means in said casing for saidshackle, a keying plate to engage one branch of said shackle, rivetholes through said plates, said keying plate having a pair of rivet pinreceiving orifices formed to permit bodily movement of said plate to andfrom shackle engaging position when a pair of rivet pins unite saidlaminations and keying plate together.

3. A lock comprising a casing formed of a plurality of superimposedplates and including orifices therethrough providing wells for receivinga shackle, and locking means in said casing for said shackle, a keyingplate to engage one branch of said shackle, rivet holes through saidplates, said keying plate having a rivet pin receiving orifice formed topermit bodily movement of said plate to and from shackle engagingposition when a rivet pin unites said laminations and keying platetogether, said casing and keying plate having other rivet receivingorifices which, when permanently united by rivets, prevents said keyingplate from being moved from shackle engaging position.

4. A look comprising a casing formed of a plurality of laminated platesand including through some of the plates orifices providing wells forreceiving the toe and heel of a shackle, locking means in said casingfor the heel of said shackle, and a keying plate to retain the heel ofsaid shackle, said keying plate having a shackle engaging portion and arivet receiving orifice contoured in relation to said shackle engagingportion to permit bodily movement of said keying plate to and fromshackle engaging position, when a rivet pin unites said laminations andkeying plate together through said rivet receiving orifice.

5. A lock comprising a casing formed of a plurality of superimposedplates and including orifices through some of the plates providing wellsfor receiving the toe and heel of a shackle, and locking means in saidcasing for said shackle, a keying plate to engage the heel of saidshackle, held between other plates of said casing and slidable betweenfaces of said other plates, rivet holes through said plates, said keyingplate having a rivet receiving orifice and a shackle heel engagingportion, a rivet pin uniting said plates and passing through the rivetreceiving orifice of said keying plate, Said rivet pin acting as alimiting stop to the slidable movement of said keying plate to and fromshackle engaging position, said rivet receiving orifice of saidkeyingplate providing a guide for the slidable movement aforesaid.

6. A look comprising a casing formed of a plurality of laminated platesincluding orifices through some of the plates providing wells forreceiving a toe and heel of a shackle, and locking means in said casingfor said shackle and a keying plate having a portion to extend into theheel engaging well for said shackle, guided between the faces ofadjacent laminations of said casing, said keying plate having a rivethole aligned with rivet holes of said other laminations of said casing,said rivet hole of said keying plate being formed to permit bodilyslidable movement of said keying plate to and from shackle heel engagingposition, while said rivet pin unites said plates together.

7. A look comprising a casing formed of a plurality of laminated platesincluding orifices through some of the plates providing wells forreceiving a toe and heel of a shackle, and locking means in said casingfor said shackle and a keying plate having a portion to extend into theheel engaging well for said shackle, guided between the faces ofadjacent laminations of said casing,

said keying plate having a rivet hole aligned with rivet holes of saidother laminations of said casing, said rivet hole of said keying platebeing formed to permit bodily. slidable movement of said keying plate toand from shackle heel engaging position, while said rivet pin unitessaid plates together, said rivet receiving orifice of said keying platebeing elongated to permit bodily movement of said keying plate when atleast one rivet pin for said plates is in position.

8. A lock comprising a casing formed of a plurality of superimposedplates to form a laminated l-ock casing, and including orifices throughsome of the plates providing wells for receiving the toe and heel of ashackle, locking means in said casing for said shackle, rivet holesthrough said plates for unitin said plates together by more than tworivet pins, a keying plate to engage the heel of said shackle, by bodilymovement between adjacent laminations of said casing, said keying platebeing accessible from the well for the toe, for movement to project intothe well of the heel of said shackle, said locking plate havin a rivetpin receiving orifice through which at least one of said rivet pinspasses, enlarged to give movement in a direction between the wells, saidrivet pin acting as a limiting stop for the movement of said keyingplate, said keying plate having other rivet pin receiving holes forpermanently locating said locking plate in shackle heel engagingposition.

9. A look comprising a casing formed of a plurality of superimposedplates and including orifices through some of the plates providin wellsfor the toe and heel, respectively, of said shackle, and locking meansin said casing for said shackle, a keying plate positioned between otherlaminations of said casing and guided between said adjacent plates, andformed with a part for engaging the heel of said shackle, said keyingplate having pairs of rivet pin receiving orifices, at least one pairbeing elongated to permit bodily movement of said keying plate to andfrom shackle heel engaging position when a pair of rivets unites saidlaminations and keying plate together, at

least One pair of rivet pin receivin orifice serving permanently tounite said laminations, including the-keying plate, againstdisplacement.

l0. In alaminated lock casing having locking mechanism for the toe andheelof a shackle, a keying plate bodily movable for engaging the heelof-said shackle, said keying plate being movableto and from shackleengaging position when Oneor more-rivet pins uniting said laminationsare in position, said keyin plate having a rivet pin engaging portionpermanently to hold said locking plate in shackle engaging position bycompleting the riveting of the laminations.

11. A locking plate for a shackle of a laminated padlock arranged toconstitute a lamination between other plates of the padlock casing, andincluding elongated heel and toe orifices, multiple rivet pin orifices,at least one rivet pin orifice being formed to permit movement of thelocking plate in respect of the remainder of the laminations of thecasing when'a rivet pin unites the casing laminations.

12. A locking plate for a shackle of a laminated padlock arranged toconstitute a lamination between other plates of the padlock casing,including rivet receiving orifices and elongated toe and heel orificeswhereby the locking plate may be slid to and from locking engagement,and a plurality of rivet pin orifices, a pair of said rivet pin orificesbeing elongated substantially to the effective elongation of the toe andheel orifices, other rivet receiving orifices of the plate conforming inalignment to the rivet receiving orifices of the remainder of the platesof the casing.

13. A 1ocking plate for a shackle of a laminated padlock and arranged toconstitute a lamination between other plates by movement to and fromshackle engaging position; and form part of the padlock casing, saidplate having toe and heel shackle orifice and rivet pin receivingorifices in which said heel shackle orifice outlines a shackle engagingwall, the said orifices being elongated with respect to each other inthe direction of said movement, at least one of said orifices beingformed to permit bodily movement of said plate to and from shackle heelengaging position with a rivet pin in position uniting the laminationsof the casing together.

14. A padlock comprising a casing formed of laminated plates, some ofwhich plates include orifices therethrough providing wells for receivingthe toe and heel of a shackle therefor, a locking element for engagingthe shackle to hold it in locked position and means to project saidshackle when disengaged by said locking element, said shackle heelhaving a shouldered portion, a clearance neck portion, and a flattenededge portion, the combination therewith of a locking plate disposedbetween laminations of said casing having a portion capable of beingprojected into the well for said heel, and movable to and from heelengaging position, the relative length of the toe portion to saidportion of said heel and the plates permitting depression against theprojection means and rotation of said shackle, when disengaged by thelocking element, the said flattened edge portion in the rotation of theshackle thereby serving as camming means to slide said locking platerelatively to the shackle for free sliding movement of the locking plateto a disengaging position with respect of the shackle heel, permittingremoval of the shackle bodily from the casing for testing of the lockingelement.

15. In a padlock comprising a casing made of laminated plates rivetedtogether having a shackle formed with toe and heel portions, wells- 11in said casing for said toe and heel portions, key operated lockingmeans for said shackle for releasing the toe portion of said shackle, alocking plate capable of movement into and out of shackle heel engagingposition by movement into and out of the well for said heel portion ofsaid shackle, said shackle heel being formed with a camming portion tocam said locking plate bodily 12 to shackle disengaging position uponmovement of said shackle independently of the locking means, therelative length of the toe portion to the heel portion of the shackleand to the plates permitting movement of the shackle plate camming anddisengaging position aforesaid.

MORRIS FALK.

